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- W2017461972 abstract "Forming solid solutions has long been considered an effective approach for good thermoelectrics because the lattice thermal conductivities are lower than those of the constituent compounds due to phonon scattering from disordered atoms. However, this effect could also be compensated by a reduction in carrier mobility due to electron scattering from the same disorder. Using a detailed study of n-type (PbTe)1–x (PbSe)x solid solution (0 ≤ x ≤ 1) as a function of composition, temperature, and doping level, quantitative modeling of transport properties reveals the important parameters characterizing these effects. Based on this analysis, a general criterion for the improvement of zT due to atomic disorder in solid solutions is derived and can be applied to several thermoelectric solid solutions, allowing a convenient prediction of whether better thermoelectric performance could be achieved in a given solid solution. Alloying is shown to be most effective at low temperatures and in materials that are unfavorable for thermoelectrics in their unalloyed forms: high lattice thermal conductivity (stiff materials with low Grüneisen parameters) and high deformation potential." @default.
- W2017461972 created "2016-06-24" @default.
- W2017461972 creator A5049121943 @default.
- W2017461972 creator A5053606930 @default.
- W2017461972 creator A5062606091 @default.
- W2017461972 creator A5085331622 @default.
- W2017461972 date "2012-10-22" @default.
- W2017461972 modified "2023-10-16" @default.
- W2017461972 title "The Criteria for Beneficial Disorder in Thermoelectric Solid Solutions" @default.
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